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<Title>SurfaceChart.addXYProjection</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1"><a href="SurfaceChart.htm">SurfaceChart</a>.<wbr>addXYProjection</p>
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<p class="heading2a">Usage</p>
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public void addXYProjection([ int offset ])
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<p class="heading2">Description</p>
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Adds a projection of the surface on the XY wall.<br><br>
The XY wall is the wall containing the x axis and y axis. It is usually under the plotted surface. Because of this, the surface may block the projection, making it hard to see. To address this issue, it is common to add a bottom margin to the z-axis (see <a href="Axis.setMargin.htm">Axis.setMargin</a>). This will move the z-axis scale and therefore the surface upwards, leaving more space between the surface and the XY wall to make the projection more visible.<br><br>
This method accepts an optional <b>offset</b> argument that can be used to move the projection vertically. A positive offset moves the it upwards. A negative offset moves it under the XY wall. Because of this, for negative offsets, the XY wall must be hidden using <a href="ThreeDChart.setWallVisibility.htm">ThreeDChart.setWallVisibility</a>, otherwise the chart will not be drawn correctly.
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<p class="heading2">Arguments</p>
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<th width="19%">Argument</th><th width="19%">Default</th><th>Description</th>
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<td>offset</td><td>0</td><td>The vertical offset of the XY projection in 3D pixel coordinates. A positive offset moves it upwards. A negative offset moves it under the XY wall.</td>
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<p class="heading2">Return Value</p>
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None
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